EP 1937879 A2 20080702 - METHOD AND APPARATUS FOR FORMING MELT SPUN NONWOVEN WEBS
Title (en)
METHOD AND APPARATUS FOR FORMING MELT SPUN NONWOVEN WEBS
Title (de)
VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON SCHMELZSPINNVLIESEN
Title (fr)
PROCÉDÉ ET DISPOSITIF DE FORMATION DE VOILES NON TISSÉS FILÉS PAR FUSION
Publication
Application
Priority
- US 2006035883 W 20060914
- US 59631105 P 20050914
Abstract (en)
[origin: US2007057414A1] A method and apparatus for forming nonwoven melt spun webs by spinning a curtain of filaments into a pressurized chamber where they are contacted with pressurized quenching fluid, then using the fluid to draw the filaments through a slot at the bottom of the chamber. The slot is a narrow two dimensional impingement point running the length of the filament curtain where the pressurized quench fluid passes through, escaping to atmosphere. The fluid pressure (potential) energy in the chamber is exchanged for velocity (kinetic) energy at the slot impingement point. The fast moving stream of fluid inside and exiting the slot acts to pull, or draw the filaments through the slot. The fluid and fiber stream is deposited onto a porous collection conveyor belt, forming a fleece web. The invention is more efficient, less complicated, easier to maintain and easier to control than prior systems for melt spinning nonwoven webs.
IPC 8 full level
B29C 48/05 (2019.01); B29C 48/335 (2019.01); D01G 9/14 (2006.01); D01G 25/00 (2006.01); D01G 37/00 (2006.01); D01G 99/00 (2010.01)
CPC (source: EP US)
B29C 48/05 (2019.01 - EP US); D01D 5/092 (2013.01 - EP US); D01D 5/0985 (2013.01 - EP US); D04H 3/005 (2013.01 - EP US); B29C 48/32 (2019.01 - EP US); B29C 48/345 (2019.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2007057414 A1 20070315; US 8017066 B2 20110913; EP 1937879 A2 20080702; EP 1937879 A4 20110420; US 2011293764 A1 20111201; US 8241024 B2 20120814; WO 2007033339 A2 20070322; WO 2007033339 A3 20070531
DOCDB simple family (application)
US 52004506 A 20060913; EP 06814672 A 20060914; US 2006035883 W 20060914; US 201113206825 A 20110810